Let’s say I am about to send bob 5 bitcoins, but in the past I’ve done 1 million individual transactions. When a miner is putting my most recent transaction into a block, do they have to go through all 1 million transactions in order to “mine” this new block?”
I just don’t understand how the miner would know how much BTC I have at the moment before this new transaction. It’s not explicitly stored anywhere right?
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